Paper stock machine



May 5, 1942. M. CHEVRIER PAPER STOCK MACHINE Filed May 25, 1940 4Sheets-Sheet l Inventor 4. I MAX/NE 0/5 l/R/ER, 241mm A iiorneu .May 5,1942. M. CHEVRIER PAPER STOCK MACHINE Filed May 25, 1940 4 Sheets-Sheet2 Inventor I MAX/NE O/evk/se, a l

A ttofney May 5, 1942. M. CHEVRIER PAPER STOCK MACHINE Filed May 25,1940 4 Sheets-Sheet 3 Attorney May 5, 1942. M. CHEVRIER PAPER STOCKMACHINE Filed May 25, 1940 4 Sheets-Sheet 4 Inventor MA X/NE CHE VR e By2mm 4 E -&- i

A iiorney Patented May 5, 1942 UNITEDSTATES PATENT OFFICE.

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Application May 25, 1940, Serial No. 337,312

2 Claims.

The present invention relates to new and useful improvements in paperstock machines and has for its primary object to provide, in a manner ashereinafter set forth, an apparatus of this character embodying a novelconstruction, combination and arrangement for automatically regulatingthe comisteney of the stock.

Another important object of the invention is to provide a paper stockmachine of the More mentioned character embodying unique means wherebythe automatic regulating mechanism may be conveniently adjusted asdesired.

Other objects of the invention are to provide a paper stock machine ofthe character described which will be comparatively simple inconstruction, strong, durable, highly efficient and reliable in use,compact, and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of theinvention will become apparent from a study of the followingspecification, taken in connection with the accompanying drawingswherein like characters of refer-- ence designate corresponding partsthroughout the several views, and wherein:

Figure 1 is a view in front elevation of a ma chine constructed inaccordance with the present invention.

Figure 2 is a top plan view thereof.

Figure 3 is a view in vertical longitudinal section, taken substantiallyon the line 32 of Figure 2.

Figure 4 is an end elevational view. a portion of the water controlvalve being broken away in section.

Figure 5 is a view in side elevation of the adjustable, springcontrolled regulating device or unit, the spring and an adjacent portionof the tank being shown in section.

Figure 6 is a cross sectional view through the machine, takensubstantially on the line 6-8 of Fig. 1.

Referring now to the drawings in detail, it will be seen that theembodiment of the invention which has been illustrated comprises anelongated tank I of suitable dimensions, said tank being open at itstop. Mounted at longitudinally spaced points in the tank I aretransversely extending partitions or dams 2 providing a stockinletchamber 2, an agitator chamber 4, a delivery chamber 5 and anoutlet or overflow chamber 6. It will be observed that the chambers 3 to6, inclusive, are provided with rounded corner portions, as at 1, toprevent the accumulation in the comers of stagnant stock. An inlet pipeI communicates with the chamber 2 and an outlet pipe 9 communicates withthe chamber i.

Mounted transversely in the tank I in the agitator chamber 4 thereof isa shaft Ill. The shaft ID has fixed thereon an agitator II for operationin the chamber 4. Referring now to Fig. 5 of the drawings, it will beobserved that the shaft III includes a threaded end portion whichprojects through the front wall of the tank I. Mounted on this endportion of the shaft I0 is an overload releasing clutch which isdesignated enerally by the reference numeral 4!. The clutch 48 includescomplemental cam members I4 and IS. the former being loose on the shaftIII, the latter being fixed on said shaft. Fixed on the outer end of theclutch member I4 is a ear I2. A circumferential groove or channel I8 isprovided in the clutch member I4, the purpose of which will be presentlyset forth. A coil spring I! is mounted on the shaft III and engaged withthe member II, thus releasably connecting the gear I2 to the shaft I0for driving said shaft. Hand operated nuts I8 are threaded on the shaftI 0 for regulating the tension of the coil spring II. Attention is herecalled to the fact that the gear I2 is comparatively wide.

Mounted transversely in suitable bearings I9 on one end of the tank Iare upper and lower shafts 20 and 2|, respectively. Fixed on the shafts20 and 2I are oppositely tapered pulleys 22 having trained thereover alaterally movable endless belt 23. The reference numeral 24 designates ascrew shaft which is joumaled in suitable bearings 25 on this end of thetank I. Threadedly mounted on the screw shaft 24 is a shifter 26 formoving the endless belt 23 laterally in either direction for varying thespeed of the upper or driven pulley 22 relative to the lower or drivepulley 22. A hand wheel 21. is provided on one end of the screw shaft 4for moving the shifter 28. Suitable guides 28 are provided on the tank Ifor the shifter 26.

Fixed on one end portion of the shaft 2| is a stepped pulley 29 forreceiving an endless drive belt from a conventional paper machine. Fixedon the other end portion of the shaft 2I is a pulley 30. The referencenumeral 3| designates a pulley which is fixed on a stub shaft 32rotatably mounted on the front of the tank I. An endless belt 33 istrained over the pulleys 30 and 3|. Fixed on the shaft 32 is acomparatively small gear 34 which drives the gear I2.

Mounted transversely on top of the tank I i above the chamber 4 is awater tank or reservoir lever 31 may be adjusted, as at 33, forregulating the stroke of said lever. One end portion of the lever 31- isoperatively connected at 39 to an end portion of the water control valve36. On the other end of the lever 31 is a yoke or fork 40 which isengaged in the groove l6 for actuation by the slidable clutch member l4.

Mounted at an inclination in the tank I and extending downwardly intothe chamber 5 thereof is a stock delivery conveyer which is designatedgenerally by the reference, numeral 4|. It will be observed that theconveyor 4| extends through the rear wall of thetank I. The conveyor 4|includes a tubular housing 42 in which a worm 43 is operable. Fixed onthe upper end portion of the shaft 44 of the worm 43 is a pulley' 45.The pulley 46 is driven by an endless belt 46 from. a pulley 41 on oneend portion of the shaft 20.

It is thought that the operation of the machine will be readily apparentfrom a consideration of the foregoing. The water control valve 36 of thetank 35 is normally closed, as seen in Fig. 4 of the drawings. With thestock in the agitating chamber 4 of the correct consistency, the shaftI0 is driven from the paper machine through an endless belt trained overthe stepped pulley 29, the shaft 2|, the pulleys 30 and 3!,

the belt 33, etc., the water control valve 36 remaining closed. However,if the stock is too heavy and the load on the shaft III is sufficientlygreat to compress the spring ll, the cam clutch member M will be causedto reciprocate on the shaft I 0, thereby opening and closing the valve36 through the lever 31 for intermittently discharging water by gravityinto the agitating chamber 4 from the tank 35. This continues until thestock has been thinned to the desired consistency and when thiscondition is reached the load on the shaft ill will have been reducedsuflieiently to permit the coil spring I! to keep the clutch 48 closedthereby again permitting the gear I! to drive the shaft in and shuttingoif the water from the tank 35. The stock flows from the chamber 4'intothe chamber 5 from which it is delivered to the usual paper machine bythe spiral or worm conveyer 4|. The speed of operation of the conveyer4| may be controlled as desired by shifting the endless belt 23 ineither direction on the pulleys 22.

It is believed that the many advantages of a paper stock machineconstructed in accordance with the present invention will be readilyunderstood and although a preferred embodiment of the apparatus is asillustrated and described, it is to be understood that changes in thedetails of construction and in the combination and arrangement of partsmay be resorted to which will fall within the scope of the invention asclaimed.

. What is claimed is:

1. In a paper stock machine, a mixing chamber, a shaft passingtransversely therethrough with one end extending from the chamber,agitator blades connected with the shaft and located in the chamber, agear loosely located on the projecting end of the shaft, slip clutchmeans for connecting the gear with the shaft; a drive shaft, a gearthereon meshing with the firstmentioned gear, water supply means in communication with the chamber, a valve for controlling communicationbetween the supply and the chamber, said clutch parts slipping on eachother when the consistency of the stock in the mixing chamber reaches acertain degree to stop .rotary movement of the blades and means betweenthe valve and the clutch means for opening the valve when the clutchparts are slipping on each other and for closing the valve means whenthe clutch parts are rotating the shaft from the gear.

2. In a paper stock machine, a mixing chamber, water supply means abovethe chamber and in communication therewith, a valve for controlling thecommunication between the supply and the chamber, a shaft passingthrough the chamber and having one end projecting therefrom, agitatorblades on the shaft within the chamber, slip clutch parts on theprojecting end of the shaft, one part being connected with the shaft andthe other rotatably arranged on the shaft, a gear connected with therotatably arranged clutch part, spring means on the shaft for holdingthe parts in engagement, a lever having one end engaged by the rotaryclutch part and its other end connected with the valve, the leverholding the valve closed when the clutch parts are in operated positionbut opening the valve when the rotary clutch part moves away from theother clutch .part which occurs when the stock in the mixing chamberreaches a certain degree of density to provide a drag on the agitatorblades, and a drive shaft having a gear thereon meshing with thefirst-mentioned gear.

MAXINE CHEVRIER.

